TY - JOUR ID - publications1333 UR - http://tse-fr.eu/pub/2347 A1 - Aghion, Philippe A1 - Bolton, Patrick A1 - Harris, Christopher A1 - Jullien, Bruno Y1 - 1991/// JF - Review of Economic Studies VL - 58 TI - Optimal Learning by Experimentation SP - 621 AV - none EP - 654 ER -